browser.jar:
% content branding %content/branding/ contentaccessible=yes
  content/branding/about.png                      (about.png)
  content/branding/about-background.jpg           (about-background.jpg)
  content/branding/about-logo.png                 (about-logo.png)
  content/branding/about-logo@2x.png              (about-logo@2x.png)
  content/branding/about-wordmark.png             (about-wordmark.png)
  content/branding/icon48.png                     (icon48.png)
  content/branding/icon64.png                     (icon64.png)
  content/branding/icon16.png                     (../default16.png)
  content/branding/icon32.png                     (../default32.png)
  content/branding/aboutDialog.css                (aboutDialog.css)
